MEXICO CITY, Sept 11 (Reuters) - Mexican conglomerate Grupo Carso, which is controlled by billionaire Carlos Slim, said on Friday that it won a $471 million dollar contract to build and operate a gas duct in northern Mexico.

Grupo Carso, said in a stock exchange filing that its subsidiary Carso Electric won the contract from Mexico’s state-run power company CFE for the gas duct, in Chihuahua and Sonora. (Reporting by Joanna Zuckerman Bernstein and Tomas Sarmiento)